Self-diagnosis method for ignition coil, electronic control unit for performing the self-diagnosis, and self-diagnostic signal generator for the self-diagnosis
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsDong-Soo Lee, Jung-Hun Lee, Sung-Kwan Bae, Do-Geun Jung
Life of this patent
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Abstract
A self-diagnosis method for an ignition coil includes receiving and confirming a current flag (C/F) signal through monitoring of primary current of an ignition coil; monitoring secondary current of the ignition coil upon receiving the C/F signal and confirming whether a fault flag (F/F) signal for determining whether misfire of the ignition coil occurs is input; and determining whether an abnormal signal of the ignition coil is generated based on the result of confirming the C/F signal and the F/F signal respectively.
Claims20
An electronic control unit (ECU), comprising
- at least one processor;
- and
- a memory device for storing computer readable commands,
- wherein the commands, when executed by the at least one processor, cause the electronic control unit to receive and confirm a current flag (C/F) signal through monitoring of primary current of an ignition coil;
- to monitor secondary current of the ignition coil upon receiving the C/F signal and confirm whether a fault flag (F/F) signal for determining whether misfire of the ignition coil occurs is input;
- and to determine whether an abnormal signal of the ignition coil is generated based on the result of confirming the C/F signal and the F/F signal respectively.
A self-diagnostic signal generator, comprising
- at least one processor;
- and
- a memory device for storing computer readable commands,
- wherein the commands, when executed by the at least one processor, cause the self-diagnostic signal generator to be connected to a ground (GND) of a primary side of an ignition coil and monitor primary current;
- to be connected to a power source of a secondary side of the ignition coil and monitor secondary current;
- and to transmit a current flag (C/F) signal to an electronic control unit based on the result of monitoring the primary current of the ignition coil and transmit a fault flag (F/F) signal to the electronic control unit based on the result of monitoring the secondary current of the ignition coil.
A self-diagnosis method for an ignition coil, comprising:
- receiving and confirming a current flag (C/F) signal through monitoring of primary current of an ignition coil by an electronic control unit (ECU);
- monitoring, by the ECU, secondary current of the ignition coil upon receiving the C/F signal and confirming whether a fault flag (F/F) signal for determining whether misfire of the ignition coil occurs is input;
- and
- determining, by the ECU, whether an abnormal signal of the ignition coil is generated based on the result of confirming the C/F signal and the F/F signal respectively.
Dependencies are inferred from the claim text.